Home / 112,812.21-155,639.34-67,491.36

Finding the Fourth Proportional to 112,812.21, 155,639.34 and 67,491.36

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Solution

The fourth proportional to 112,812.21, 155,639.34 and 67,491.36 is: 93,113.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,812.21 : 155,639.34 = 67,491.36 : x
  2. Step 2: Convert to fraction form
    112,812.21/155,639.34 = 67,491.36/x
  3. Step 3: Cross multiply
    112,812.21x = 155,639.34 × 67,491.36
  4. Step 4: Simplify right side
    112,812.21x = 10,504,310,726.10
  5. Step 5: Solve for x
    x = 10,504,310,726.10/112,812.21
  6. Step 6: Final answer
    x = 93,113.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.